Machine for lasting boots and shoes.



H. RAAB.

MACHINE FOR LASTING BOOTS AND SHOES.

APPLICATION FILED JUNE 22, 1911.

1,036,146. Patented Aug. 20, 1912.

SHEETS-SHELBT 1.

H. RAABL MACHINE FOR LASTING BOOTS AND SHOES.

APPLICATION FILED JUNE 22,1911. 1,036,146. Patented Aug, 20, 1912.

3 SHEETS-SHEET 2.

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anvento'v H. RAAB. MACHINE FOR LASTING BOOTS AND SHOES.

APPLICATION FILED JUNE 22,1911. 1,036,146, Patented Aug. 20,1912.

3 SHEETS-SHEET 3.

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MACHINE FOR LASTING BOOTS AND SHOES Specification of Letters Patent.

Patented Aug. 20, 1912.

Application filed June 22,1911, Serial No. 634,719.

To all IF/2077b it meg ,concernw Be it known that I, HEINRICH RAAB, cit]- zen of Germany, subject of the King of varia and Emperor of Germany, residing at Lembergerstrasse 64, Pirmasens, 1n the Kingdom of Bavaria and Empire of Germany, ha 'e invented new and useful Improvements in Machines for Lasting Boots andfihoes, of which the followlng'is a specification.

The present invention relates to a machine for lasting boots and shoes by means of whi h -:it is possible to stretch any kind of boot or sh e overjthe lastand to nail it to the insole cured to the last in an entirely autimiaiic manner. This is effected without adjusting the operative parts no matter whe her the boot or shoe large or small.

An embodiment of the invention is illus trated by way of example in the accompanying drawing in which: I I

l igu e 1 is aside elevation of the machine wit-b ttle guide roll 25 (Figs. 2 and 5) omitted. Fig. 2 is a front elevation the pincers on the left hand side being omitted.

Fig. o is a rear elevation of the head of the machine. Fig. 4 is a front elevation of the with the right hand pincers open 'o t hand pincers closed.

mg sli n cuss section. Fig. (3 is a. side eleyat u of the pincers without the parcels uide I Thehead of the machine is symmetrical in all its parts, that is to say. all the parts comprised on the left hand side are also arranged on the right hand side.

The numerals in brackcts'in the followingjdeso fiption indicate partwomitted on one side of the drawing to enable the parts located. behind them to be better seen. it is possible to do this without impairing the clearness of he drawing because as already stated the arrai'igement of the tools-on the head is symmetrical.

After the insole has been secured to the last in the usual manuer'with'flat headed pins the boot upper is secured thereon at the toe and at the heel and thereupon arranged on the last support A of the machine which is supported by't'he part1, rockable about thepivot 2. The various sizes of boots and shoes are provided for owing to the fact thatthe support3 of the last support is Fig. 5' pun er and the guide rollers in 1 displaceable in the longitudinal direction of the boot for example by means of a rack, toothed wheel and hand wheel 3. By setting the spindle 4,; which at its upper part carries a cushion 5, higher or lower the height of the instep of the boot may be varied. The work is clamped by rotating the hand wheel 6 upon the shaft of which a toothed wheel 6 is mounted and gears with a toothed segment 7 rotatable about the bolt S and holding the last above this bolt. The V pawl 9 holds the hand wheel firmly in the position in Which it is set. In order that the boot may invariably retain its correct position in front of the tools the entire last support. is pressed upward by means of a spring 83 arranged in the cylinder 1 cast on the part 1. By this means the insole is caused to bear against the guide roll 10 which is adjustable in the vertical direction. In order to enable the operating mechanism to follow the lateral confines of the last the last support it is also rotatable about the vertical central line B B. Before the boot is arranged on the machine the last; support A is drawn downward by means of the chain 11 and pedal 12 (Fig. 2) in opposition to the pressure of the spring in the casing l and this last support is only released when the toe of the boot is beneath the roll lO.

. When the machine is rendered operative in the first place the pincer-s 13 and 14 close and seize the leather as shown -in Fig. 5.

Ihisis effected owing to the fact thatin the 7 jaws. The front rods 21 and 22 which are not connectedwith the levers l7 and 18 do not at first 'wart icipate in the upward movement of the rear rods 19 and 20 as they are braked by springs 13" 14 laterally arranged in their guides. It is only upon the further rotation of the cam plates 15, 16 that the front rods 21 and 22 are also lifted thus stretching the leather. In order to hold the pincers at the correct distance from the edge of the last the guides 13 and 14 carrying the pincers are rockable on the arms 27, 28 about the shafts 15 16 and are automatically adjusted by means of the guide rolls 25 and 26 mounted on the rods 23 and 24 distance, and a device for automatically stopping the machine when the operation is completed.

2. In a machine for lasting boots and shoes, lasting pincers and nailing devices on both sides of the last, a last support for the shoe, mechanism for advancing said last support to the extent of the desired nail distance, and a stopping device, said last support having means for engaging said stopping device when the operation is completed.

3. In a machine for lasting boots and shoes a lasting pincers and nailing devices on both sides of the last, said pincers and nailing devices having guide members moving along the edge of the last, a support for the shoe, a mechanism for advancing said support and a device for automatically stopping the machine.

4. In a machine for lasting boots and shoes a lasting pincers and nailing devices on both sides of the last, said pincers havin arms, traction rods with dove-tail shaped ends, connected with said arms, a support for the shoe, a mechanism for advancing said support and a device for automatically stopping the machine.

5. In a machine for lasting boots and shoes having lasting pincers and nailing devices on both sides of the last, a last sup port for the shoe, a vertical lever hinged at its lower end movable in a vertical plane, said last support being arranged on the upper end of said lever, a spring for pressing said last support upward, mechanism for advancing said last support, and a device for automatically stopping the machine.

(3. In a machine for lasting boots and shoes, lasting pincers and nailing devices, a support for the shoe, a vertical lever hinged at its lower end, a toothed segment near the upper end of said lever, a gear meshing with said segment, said shoe support being arranged on the upper end of said lever, a shaft, a ratchet wheel on said shaft, said gear being mounted on said ratchet wheel shaft, shaft bearings for said shaft on the machine frame, a pawl engaging said ratchet wheel and hinged on the machine frame, a 'rod moved by the main shaft of the machine, said pawl being connected to said rod. I

7. In a machine for lasting boots and shoes, lasting pincers and nailing devices, a support for the shoe having an adjustable bolt, a pawl of the same height as said bolt, said pawl being hinged on the machine frame, the bolt being adapted to abut against said pawl, a crank plate having its hearings on the machine frame and being normally held against turning in one direction by said pawl and being released when said bolt abuts against said awl, a rod connecting said crankplate with the main coupling of the machine, and a spring for pressing said support upward, said coupling being disengaged When the released crank plate turns under the weight of said connecting rod and under the pressure of said spring,

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HEINRICH RAAB.

Witnesses:

HEINRICH THEILMANN, PFILIPP MtiLLER. 

